Sea Blue Color Code: #047495, RGB, HSL & CMYK

Sea Blue color values

HEX #047495

RGB rgb(4, 116, 149)

HSL hsl(194, 95%, 30%)

HSV 194, 97%, 58%

HWB hwb(194 2% 42%)

CMYK 97%, 22%, 0%, 42%

Decimal 291989

30%HSL lightness (medium-dark)

95%HSL saturation (vivid)

194°Hue angle (cyan)

0.147Relative luminance

CMYK is a standard screen-to-print conversion. Printed results depend on inks, paper and color profiles.

What is Sea Blue?

“Sea Blue” is a crowd-sourced name from the XKCD Color Survey, in which participants typed names for colors they were shown. It is a popular everyday label rather than an official standard.

Its hue angle of 194° places it in the cyan part of the color wheel, with 95% saturation (vivid) and 30% lightness (medium-dark). It is a cool color.

Compared with the other blue colors in the Aqeeb Studio library, it is lighter than 16% of them and more saturated than 59% of them.

Its relative luminance is 0.147, which makes it a mid-tone color. That is below the 0.179 crossover point at which black and white text have equal contrast, so white text has the advantage.

Sea Blue counts as a dark color: its HSL lightness is 30% and its relative luminance is 0.147. White text reads comfortably on it (5.33:1 contrast).

Text contrast on Sea Blue

WCAG contrast of white and black text on Sea Blue
Text	Preview	Ratio	AA normal	AA large	AAA normal	AAA large
White text	Sample text	5.33:1 Good	Pass	Pass	Fail	Pass
Black text	Sample text	3.93:1 Limited	Fail	Pass	Fail	Fail

Ratios use the WCAG 2 formula and are truncated, never rounded up. Test any pair with the contrast checker.

Colors that go with Sea Blue

Complementary color

Complementary colors sit directly opposite each other on the color wheel (180° apart). They give the strongest hue contrast, which suits calls to action and accents.

≈ Brown Red#952504

Analogous colors

Analogous colors are neighbors on the wheel, 30° either side of the base hue. They blend smoothly and are easy to combine in backgrounds, gradients and illustrations.

≈ Viridian#04956E ≈ Sapphire#042B95

Triadic colors

A triadic scheme uses three hues spaced 120° apart. It is lively yet balanced, and works best when one color leads and the other two act as accents.

≈ Red Violet#950474 ≈ Dark Yellow Green#749504

Split-complementary colors

Split-complementary keeps the base color and uses the two colors on either side of its complement (150° and 210°). The contrast is strong but gentler than a direct complement.

≈ Rouge#95042B ≈ Muddy Brown#956E04

Tetradic colors

A tetradic (rectangle) scheme combines two complementary pairs at 0°, 60°, 180° and 240°. It offers variety but needs one dominant color to stay balanced.

≈ Dark Blue#250495 ≈ Brown Red#952504 ≈ Dark Yellow Green#749504

Monochromatic variants

Monochromatic variants keep the same hue and saturation and only change lightness, which makes them dependable for UI scales and subtle layered designs.

#01171E#01171E

#034D63#034D63

#0583A9#0583A9

#06BAEE#06BAEE

#42D0FA#42D0FA

A “≈” before a name means the exact harmony color has no named match, so the link goes to the closest named color.

Tints and shades of Sea Blue

Lighter tints (mixed with white)

Darker shades (mixed with black)

Select any swatch to copy its HEX code. Build longer scales with the tints and shades tool.

Ocean Blue#03719C Ocean#017B92 Peacock Blue#016795 Teal Blue#01889F Stormy Blue#507B9C Dull Blue#49759C Metallic Blue#4F738E Muted Blue#3B719F

Where to use Sea Blue

Button, banner and badge backgrounds with white text (5.33:1 contrast)
Accents that need to stand out: call-to-action buttons, charts and illustrations
Large headings, icons and graphics, where a 3:1 contrast ratio is enough
Charts and dashboards
Links, buttons and primary interface accents
Corporate, finance and software branding

Use Sea Blue in CSS

:root {
  --color-sea-blue: #047495;
}

.element {
  color: var(--color-sea-blue);
  background-color: #047495;
  border: 2px solid #047495;
}

Questions about Sea Blue

What is the HEX code for Sea Blue?

Sea Blue is #047495.

What is the RGB value of Sea Blue?

The RGB value of Sea Blue is 4, 116, 149: 4 red, 116 green and 149 blue on a 0–255 scale, written rgb(4, 116, 149) in CSS.

What is the HSL value of Sea Blue?

The HSL value of Sea Blue is 194°, 95%, 30% (hue, saturation, lightness), written hsl(194, 95%, 30%) in CSS.

What is the CMYK value of Sea Blue?

A standard conversion gives about C 97%, M 22%, Y 0%, K 42%. Real print results depend on the inks, paper and color profile, so treat CMYK here as a reference value.

Is Sea Blue a light or dark color?

Sea Blue counts as a dark color: its HSL lightness is 30% and its relative luminance is 0.147. White text reads comfortably on it (5.33:1 contrast).

How does Sea Blue look with white text?

White text on Sea Blue has a contrast ratio of 5.33:1, rated Good. It meets WCAG AA for normal text.

How does Sea Blue look with black text?

Black text on Sea Blue has a contrast ratio of 3.93:1, rated Limited. It does not reach WCAG AA for normal text; use large text only.

What colors go well with Sea Blue?

Brown Red is its complementary color, and Viridian sits beside it as an analogous color. Lighter and darker variants of the same hue also work well for monochromatic palettes.

Where can Sea Blue be used?

It suits button, banner and badge backgrounds with white text (5.33:1 contrast); accents that need to stand out: call-to-action buttons, charts and illustrations; large headings, icons and graphics, where a 3:1 contrast ratio is enough.

How do I use Sea Blue in CSS?

Use color: #047495; for text, background-color: #047495; for fills, or define a custom property such as --color-sea-blue: #047495; and reuse it with var(--color-sea-blue).

About this color page

Crowd-sourced name from the XKCD Color Survey (CC0). Values are calculated from the HEX code; color names are labels, not trademarks or standards unless stated. Screens render colors differently, so always check important colors on your own device. See the disclaimer.

Sea Blue Color Code: #047495